We have received several reports concerning the performance of the Altitude Hold feature of the HoverflyPRO. The operation of this feature changed from earlier versions of the firmware. Although many users have reported excellent Altitude Hold, some have reported an immediate descent of as much as 30 feet upon engaging the Altitude Hold feature.
We are in the process of analyzing reports and making modifications to the firmware. It is recommended that users do not use this feature until we have completed our revisions and release new firmware, which should occur this week.